function s1_hellp(){
echo "hello world!"
}
function s2_tell_who_i_am(){
echo:"HCL"
}
function s3_which_distro_do_i_use(){
NAME="CentOS-7minimal_Linux"
}
function s4_view_my_cpu_arch(){
uname -m x86_64
}
function s5_show_first_scsi_disk_size(){
lsblk -1 |\grep disk | \grep '^sda' | awk '{print $4}'
}
function s6_show_main_memory_size_in_megabytes(){
free -m |grep " Mem: " | awk '{print $4096}'
} 
